Changing the text colour tint from 70% black to 100% black in Paragraph Styles crashes my M1 Mac mini 100% of the time.

Trying to manually change the text colour is not possible because when I click on the drop down menu for colour and tint in the control bar, the menu either doesn't appear at all, or appears for a few milliseconds and then disappears. I officially cannot work on my document now. What to do?!

screen shot of text colour drop down menu bug.
https://www.icloud.com/iclouddrive/03fd5jEqLrVSXxB-6eZgCtMLw#Screen_Recording_2022-01-28_at_12.21.16_pm

I'm using th pre-release version 17.7 (beach the main release is unusable)

I also have the disappearing text bug and a **** load of other small bugs I can work around but I cannot work around this bug at all. I don't know what to do.